MAC Address :

Media Access Control address (MAC address) is a unique identifier assigned to most network adapters or network interface cards (NICs) by the manufacturer for identification, and used in the Media Access Control protocol sublayer. If assigned by the manufacturer, a MAC address usually encodes the manufacturer’s registered identification number. It may also be known as an Ethernet Hardware Address (EHA), hardware address, adapter address, or physical address.

In linux you can find the MAC id using below command

$ifconfig

Link encap:Ethernet HWaddr 01:01 :01 : 01 : 01 : 01
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: x Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Red highlighted one is you mac id

MAC : 01:01 :01 : 01 : 01 : 01

• First 3 bytes of the MAC address identifies manufacturer, another 3 bytes it’s serial number.

• To get vendor manufacturer click here to find the vendor information